RCDD Study Guide 2026
Everything you need to pass the RCDD exam in one place: the exam format, every topic to study, real practice questions with explanations, flashcards, and full-length practice tests. Free, no sign-up needed.
📋 RCDD Exam Format at a Glance
📚 RCDD Topics to Study (33)
✍️ Sample RCDD Questions & Answers
1. In a structured cabling design, the consolidation point (CP) is permitted only in which cabling subsystem?
A consolidation point is an optional interconnection point within the horizontal cabling subsystem between the TR and the work area outlet.
2. Which of the following correctly describes a modular furniture system's telecommunications cabling path?
Modular furniture cabling uses consolidation points or multi-user outlets (MUTOAs) in the open office, with cables routed within the furniture raceways to each workstation.
3. According to TIA-568, what is the maximum channel length for OM3 multimode fiber supporting 10GBASE-SR (10 Gigabit Ethernet)?
OM3 50/125 µm multimode fiber supports 10GBASE-SR up to 300 meters per IEEE 802.3ae and TIA-568 channel specifications.
4. Which frequency band is most susceptible to absorption by walls and physical obstructions in an indoor wireless deployment?
The 5 GHz band has shorter wavelengths that are more readily absorbed and attenuated by walls and obstructions compared to 2.4 GHz, reducing range indoors.
5. A case study presents a legacy Token Ring network being replaced with Gigabit Ethernet. The existing CAT 3 cabling is still in place. What does the RCDD recommend?
Gigabit Ethernet over copper requires at minimum CAT 5e, and the RCDD should recommend upgrading to CAT 6 or higher for longevity.
6. What ANSI/TIA standard specifies grounding and bonding requirements for telecommunications in commercial buildings?
ANSI/TIA-607 specifies the grounding and bonding requirements for telecommunications infrastructure in commercial buildings.